Golf Prosthesis Final Design Report (End)
Specification Satisfaction for Top Concepts
In order to determine which concept will be selected as our final design we looked at each one to see how well they satisfy the customer specifications. Earlier in the design process we looked at how well our concepts satisfied the design specifications in order to select our top concepts. Now that we have narrowed our choices down to four top concepts we must look closer at each design and determine how feasible their construction will be.
Our first specification is price. Since we do not have a bill of materials for any of the top concepts we cannot pinpoint the final cost for each. But we can roughly estimate the cost based on how many parts will be needed. Both the slotted wrist and pre-set wrist designs are cheaper when compared to the bevel gear and magnetic designs. They are cheaper because they do not require moving parts where both the bevel gear and magnetic designs do require moving parts.
When it comes to weight the golfer wants the device to be as light as possible. With this in mind all of the top concepts are relatively lightweight except the bevel gear system. The bevel gear has numerous moving parts in order to assist rotation during the backswing. The extra weight of all the parts is detrimental to the golf swing and makes the entire swinging process more difficult for the golfer.
Ease of use, interchangeability, reliability, and independent use are specifications to be determined by the golfer when using the device. All four of our top concepts have been designed to meet each of these specifications but it is difficult right now to determine which design will meet these specifications the easiest. The only way to determine this will be to test our concepts.
The final specification is the aesthetics of the device, or how appealing the device is to look at. Since each concept is essentially a swing aide they would look abnormal if you saw someone use one on a golf course. With this in mind the final design must look as ordinary as possible. Immediately both the bevel gear system and magnetic designs stick out like a sore thumb. Both systems have numerous moving parts that take away from the golfer actually swinging the golf club with their given skill set. Also, the bevel gear system is bulky and looks out of place on a golf course. The pre-setting wrist isn’t bulky but the fact that you have to cock your wrists in place before you start your backswing may leave golfers self-conscious when playing. The slotted wrist design has the least moving parts and isn’t bulky enough to attract unwanted attention.
After reviewing how well our four top concepts meet the design specifications, we narrowed down our selection to the slotted wrist and pre-setting wrist designs. These two designs, once manufactured, are smaller and lighter making it easier for an amputee to use. They also involve less moving parts than the bevel gear system and magnetic designs. We want to move forward with a simplistic design in order to manage production cost and future maintenance of the device. Solid Works models of the slotted wrist and pre-setting wrist designs are shown in Appendix E.
B.1: Initial Slotted Wrist Solidworks Model
B.2: Golf sleeve drawings
B3: Golf Cuff Drawing
B.4: Hook drawings
B.5: Final Slotted Wrist Drawings
B.6 Forearm Attachment Solid works Model
B.7 Preset Wrist Solid works Design